If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf
B4184
Brij® L23 solution
30 % (w/v) in H2O
Synonym(s):
Brij® 35 solution, C12E23, Polyoxyethylene (23) lauryl ether
About This Item
Recommended Products
biological source
synthetic
Quality Level
description
non-ionic
form
liquid
mol wt
~1198.0 g/mol
concentration
30 % (w/v) in H2O
aggregation number
40
CMC
91 μM
transition temp
cloud point ≥100 °C
solubility
water: soluble
density
1.024 g/mL
HLB
16.9
SMILES string
CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO
InChI
1S/C58H118O24/c1-2-3-4-5-6-7-8-9-10-11-13-60-15-17-62-19-21-64-23-25-66-27-29-68-31-33-70-35-37-72-39-41-74-43-45-76-47-49-78-51-53-80-55-57-82-58-56-81-54-52-79-50-48-77-46-44-75-42-40-73-38-36-71-34-32-69-30-28-67-26-24-65-22-20-63-18-16-61-14-12-59/h59H,2-58H2,1H3
InChI key
IEQAICDLOKRSRL-UHFFFAOYSA-N
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General description
Application
- as a supplement of De Man, Rogosa, Sharpe (MRS) broth for monitoring bacteriocin production by lactic acid bacteria(66)
- as a component of developing buffer for the incubation of zymogram gel for metalloproteinase quantification(67)
- as a component of activation buffer for recombinant human hepsin(68)
Biochem/physiol Actions
Features and Benefits
Packaging
Preparation Note
Other Notes
Legal Information
comparable product
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Aquatic Chronic 2 - Eye Irrit. 2 - Skin Irrit. 2
Storage Class Code
10 - Combustible liquids
WGK
WGK 2
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Cathepsin B is a lysosomal cysteine proteinase with broad specificity. This protocol uses Nα–CBZ–Arg–Arg–7–amido–4–methylcoumarin as the substrate for fluorometric detection of Cathepsin B activity.
Cathepsin B is a lysosomal cysteine proteinase with broad specificity. This protocol uses Nα–CBZ–Arg–Arg–7–amido–4–methylcoumarin as the substrate for fluorometric detection of Cathepsin B activity.
Cathepsin B is a lysosomal cysteine proteinase with broad specificity. This protocol uses Nα–CBZ–Arg–Arg–7–amido–4–methylcoumarin as the substrate for fluorometric detection of Cathepsin B activity.
Cathepsin B is a lysosomal cysteine proteinase with broad specificity. This protocol uses Nα–CBZ–Arg–Arg–7–amido–4–methylcoumarin as the substrate for fluorometric detection of Cathepsin B activity.
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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